Effect of Combined β-Alanine and SodiumBicarbonate Supplementation on Cycling Performance

Bellinger, Phillip; Howe, Samuel T.; Shing, Cecilia M.; Fell, James C.

doi:10.1249/mss.0b013e31824cc08d

Cited by 61 publications

(95 citation statements)

References 31 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…B et al 14 reported no e ect of β-alanine supplementation on maximal 4 minute cycling performance, although van Thienen et al 15 reported a signi cant e ect of β-alanine on 30 s isokinetic sprint cycling, performed at the end of a 110 min simulated endurance cycle race. Due to the ndings of T et al 15 , we also determined the 1 km split times in the current study to ascertain whether there was any e ect of β-alanine supplementation on exercise performance towards the end of the 20 km time trial.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, several studies have focussed on the effects of β-alanine supplementation on high intensity cycling capacity and have shown significant increases following supplementation [11][12][13] . The effects of β-alanine supplementation on cycling performance are more equivocal, with some showing no e ect 14 and others a signi cant improvement 15 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of β-alanine supplementation on 20 km cycling time trial performance

James

Cooper

Robertson

et al. 2014

Rev. bras. educ. fís. esporte

View full text Add to dashboard Cite

The effects of β-alanine supplementation on high-intensity cycling performance and capacity have been evaluated, although the effects on longer duration cycling performance are unclear. Nineteen UK category 1 male cyclists completed four 20 km cycling time trials, two before and two after supplementation with either 6.4 g•d -1 β-alanine (n = 10; BA) or a matched placebo (n = 9; P). Performance time for the 20 km time trial and 1 km split times were recorded. There was no signifi cant effect of β-alanine supplementation on 20 km time trial performance (BA-pre 1943 ± 129 s; BA-post 1950 ± 147 s; P-pre 1989 ± 106 s; P-post 1986 ± 115 s) or on the performance of each 1 km split. The effect of β-alanine on 20 km time trial performance was deemed unclear as determined by magnitude based inferences. Supplementation with 6.4 g•d -1 of β-alanine for 4 weeks did not affect 20 km cycling time trial performance in well trained male cyclists.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of β-alanine supplementation on 20 km cycling time trial performance

James

Cooper

Robertson

et al. 2014

Rev. bras. educ. fís. esporte

View full text Add to dashboard Cite

show abstract

“…These results are consistent with previous research using trained participants [52,100,116,132]. The authors suggest that the wrestlers in the study may have been restricting their carbohydrate intake in order to make weight for an upcoming competition and every wrestler (in both groups)…”

Section: S)supporting

confidence: 91%

“…In contrast to the findings of Baguet et al [109], no significant differences in blood pH, average power and TWD were observed in highly trained cyclists who completed a four minute performance time trial before and after 28 days of supplementation of β-alanine (65 mg·kgBM -1 per day) [116]. However, using magnitude-based statistics, there was a 37% likelihood of an increase in average power following supplementation.…”

Section: S)contrasting

confidence: 76%

β–alanine: performance effects, usage and side effects

Kelly¹

View full text Add to dashboard Cite

β-alanine is a relatively new ergogenic aid and a number of questions relating to its effectiveness in enhancing high intensity exercise performance remain to be addressed. The five studies described in this thesis examined the influence of β-alanine supplementation and high intensity training on exercise capacity and considered factors that potentially influence dosage compliance and side effects -factors that may impact on the ergogenic value of β-alanine supplementation. Study 1 examined the efficacy of β-alanine supplementation in conjunction with repeated sprint and sprint interval training (and combined with a pre-exercise dose of sodium bicarbonate), on repeated-sprint ability and high intensity cycling capacity (time to fatigue at 110% of maximum power output). β-alanine supplementation, when combined with sprint and interval training, improved repeated sprint ability but did not influence high intensity cycle capacity. Furthermore, acute sodium bicarbonate ingestion improved high intensity cycle capacity before training but had no influence on either repeated sprint ability or exercise capacity after training. It is likely that intramuscular buffer capacity increased as a result of training and that this may have outweighed the potential ergogenic buffering effects of β-alanine and sodium bicarbonate (i.e., both alone and in combination).Study 2 investigated β-alanine supplementation use and level of knowledge amongst professional rugby union (n = 87), rugby league (n = 180) and Australian Rules Football (n = 303) players. Over half the professional footballers surveyed used β-alanine, yet most supplemented in a manner inconsistent with recommendations. A better understanding of the environment and culture within professional football codes is required before supplement use aligns with evidence-based β-alanine supplementation recommendations. In light of these findings, Study 3 examined compliance levels to β-alanine supplementation in an applied setting. Compliance over a 28 day period was 59% (± 24%) which was significantly lower than the mean compliance rate reported by others (96%) (p < 0.0001). It was concluded that the determinants of β-alanine (non-) compliance in athletes needed to be further investigated. Study 4 examined potential relationships between different β-alanine dosages and side effects. Healthy male participants were divided into low (< 75 kg) and high (> 85kg) body mass groups and completed three supplementation treatments: 1. a placebo, 2. β-alanine as a relative dose of 0.02 g·kgBM -1 and 3. β-alanine as an absolute dose of 1.6 g. For 90 min following supplementation in each condition, participants completed a questionnaire that sought responses to side effects. It was found that lighter individuals iii experienced fewer side effects when they supplemented with β-alanine as a dose relative to body mass; heavier individuals experienced fewer side effects when they consumed an absolute dose of 1.6 g. It was concluded that individualising the supplementation of β-alanine is...

show abstract

“…The 1% to 3% improvements observed with many ergogenic aids are rarely additive. [7][8][9] Why might this be the case? One possible explanation is that that many ergogenic aids ultimately act on a central mechanism that regulates performance.…”

mentioning

confidence: 99%